General consensus among archaeologists is that human life has its origins in the East African Rift Valley two million years ago. So no matter where you try to trace your ancestry from (whether you identify as Chinese, Czech, Chechen, Greek, Roman, Arab, Jew, Inca, or even Australian Aboriginal or American Indian) all humanoids ultimately emerged from a branch of primates from Africa. We are all descendants of our Paleolithic ancestors, ultimately quite African, having migrated prehistorically in successive waves to nearly every patch of habitable space on Earth. Humans have come a long way since we migrated out of Africa. No human is a foreigner when you consider Earth your home, so let us all use the same measurement system.